// Copyright (c) 2015-present, salesforce.com, inc. All rights reserved
// Licensed under BSD 3-Clause - see LICENSE.txt or git.io/sfdc-license

/**
 * @name base
 * @selector .slds-file-selector
 * @restrict div
 * @support dev-ready
 * @variant
 */
.slds-file-selector {
  display: inline-flex;
}

/**
 * Region that a file can be dropped within
 *
 * @selector .slds-file-selector__dropzone
 * @restrict .slds-file-selector div
 * @required
 */
.slds-file-selector__dropzone {
  padding: $spacing-xxx-small;
  border: $border-width-thin dashed var(--slds-g-color-border-base-4, #{$color-border});
  border-radius: $border-radius-medium;

  /**
   * @selector .slds-has-drag-over
   * @restrict .slds-file-selector__dropzone
   * @modifier
   */
  &.slds-has-drag-over {
    outline: 0;
    border-color: var(--slds-g-color-brand-base-60, #{$color-border-input-active});
    box-shadow: $shadow-button-focus;
    border-style: solid;
  }
}

/**
 * Hidden input element
 *
 * @selector .slds-file-selector__input
 * @restrict .slds-file-selector input
 * @required
 */
.slds-file-selector__input {

  &:focus ~ .slds-file-selector__body > .slds-file-selector__button {
    box-shadow: var(--slds-g-shadow-outline-focus-1, #{$shadow-button-focus});
  }

  &[disabled] ~ .slds-file-selector__body {
    color: var(--slds-g-color-neutral-base-50, #{$color-text-button-default-disabled});

    > .slds-file-selector__button {
      background: var(--slds-g-color-neutral-base-95, #{$color-background-button-brand-disabled});
      border-color: var(--slds-g-color-neutral-base-80, #{$color-border-button-brand-disabled});
      color: var(--slds-g-color-neutral-base-50, #{$color-text-button-brand-disabled});
    }

    > .slds-file-selector__body-icon {
      fill: currentColor;
    }
  }
}

/**
 * Faux button
 *
 * @selector .slds-file-selector__button
 * @restrict .slds-file-selector button, .slds-file-selector span
 * @required
 */
.slds-file-selector__button {
  display: inline-flex;
  align-items: center;
}

/**
 * Modifications based on context
 *
 * Single Line
 * Dedicated dropzone when there are multiple dropzones in the form or when
 * the input is positioned among other form inputs.
 *
 * @selector .slds-file-selector_files
 * @restrict .slds-file-selector
 * @required
 */
.slds-file-selector_files,
.slds-file-selector--files {
  /**
   * Container for file selector content, specifically within the dropzone
   *
   * @selector .slds-file-selector__body
   * @restrict .slds-file-selector label
   * @required
   */
  .slds-file-selector__body {
    display: flex;
    align-items: center;
  }

  /**
   * Descriptive call back text
   *
   * @selector .slds-file-selector__text
   * @restrict .slds-file-selector span
   * @required
   */
  .slds-file-selector__text {
    margin-left: $spacing-x-small;
    margin-right: $spacing-small;
  }
}

/**
 * Multi Line / Image
 *
 * Use as a dedicated dropzone for image files only. May require a
 * cropping control.
 *
 * @name image
 * @selector .slds-file-selector_images
 * @restrict .slds-file-selector
 * @support dev-ready
 * @variant
 */
.slds-file-selector_images,
.slds-file-selector--images {
  display: block;

  .slds-file-selector__dropzone {
    @include absolute-center;
    padding: $spacing-medium;
  }

  .slds-file-selector__body {
    text-align: center;
  }

  .slds-file-selector__text {
    margin-top: $var-spacing-horizontal-small;
  }
}

/**
 * Invisible Dropzone (Container)
 *
 * Use when an entire container should be droppable.
 * The container should have a visible boundary, like a modal, composer, or page.
 *
 * @name integrated
 * @selector .slds-file-selector_integrated
 * @restrict .slds-file-selector
 * @support dev-ready
 * @variant
 */
.slds-file-selector_integrated,
.slds-file-selector--integrated {
  @include square(100%);
  position: relative;
  display: block;
}

/**
 * Specific to integrated file selector — region that a file can be dropped within
 *
 * @selector .slds-file-selector__dropzone_integrated
 * @restrict .slds-file-selector_integrated div
 * @required
 */
.slds-file-selector__dropzone_integrated,
.slds-file-selector__dropzone--integrated {
  @include absolute-center;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 0;
  opacity: 0;
  z-index: -1;

  /**
   * Informs dropzone that file has been dragged into the viewport
   *
   * @selector .slds-has-drag
   * @restrict .slds-file-selector__dropzone_integrated
   * @notes To be added with JavaScript
   * @required
   * @modifier
   */
  &.slds-has-drag {
    background: var(--slds-g-color-neutral-100-opacity-75, #{$color-background-backdrop});
    opacity: 1;
    z-index: $z-index-overlay;
  }

  /**
   * Informs dropzone that file has been dragged into its region
   *
   * @selector .slds-has-drag-over
   * @restrict .slds-file-selector__dropzone_integrated
   * @notes To be added with JavaScript
   * @required
   * @modifier
   */
  &.slds-has-drag-over {
    background: var(--slds-g-color-neutral-base-95, #{$color-background-backdrop-tint});
    box-shadow: 0 0 0 4px var(--slds-g-color-border-brand-2, #{$color-border-brand}) inset;
  }
}

/**
 * Specific to integrated file selector — container for file selector
 * content, specifically within the dropzone
 *
 * @selector .slds-file-selector__body_integrated
 * @restrict .slds-file-selector_integrated label
 * @required
 */
.slds-file-selector__body_integrated,
.slds-file-selector__body--integrated {
  @include square($size-x-small);
  @include absolute-center;
  background: var(--slds-g-color-neutral-base-100, #{$color-background-alt});
  box-shadow: $shadow-drop-down;
  border: $border-width-thin solid var(--slds-g-color-border-base-1, #{$color-border});
  border-radius: $border-radius-medium;
  flex-direction: column;
}

/**
 * Specific to integrated file selector — Descriptive call back text
 *
 * @selector .slds-file-selector__text_integrated
 * @restrict .slds-file-selector_integrated span
 * @required
 */
.slds-file-selector__text_integrated,
.slds-file-selector__text--integrated {
  margin-top: $spacing-small;
}
